Several Black-faced blennies have been found in Dorset and the Nudibranch, Favorinus blianus, was sighted during a dive on Scylla.

The Black-faced blenny, Tripterygion delaisi, is fairly uncommon having been recorded in only three locations on the south coast of Britain. It can reach 9 cm long. Its colouring varies. Both males and females are grey-brown in colour with vertical dark bars. However, in mating season, the males have bright yellow bodies with blue-edged fins and a black head. Males court the females by swimming in a figure of eight.